Balance Sheet Components - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
POP displays, net	$ 12,767	$ 14,750
Prepaid marketing	9,103	6,074
Derivative assets	833	0
Prepaid expenses	14,070	24,204
Insurance receivable	900	37,300
Other	21,436	14,941
Total prepaid expenses and other current assets	$ 59,109	$ 97,269